Combustion Tap-Off Cycle, 2016 Embry-Riddle Aeronautical University
Combustion Tap-Off Cycle, Nicole Shriver
College of Engineering
This directed study was done on the combustion tap-off cycle, which is a unique type of rocket engine cycle. The combustion tap-off cycle is not one that is mentioned or discussed in the AE 414 Space Propulsion class. This cycle has only been used by two engines, the J-2S and BE-3. The J-2S was created in the 1960’s by heritage Rocketdyne. This engine has never been flown, but it has been tested extensively. This engine proved that the tap-off cycle was possible for rockets and useful for its throttling capabilities. The BE-3 was developed by Blue Origin for use ...
Dji S-1000 Spreading Wings Octocopter: Determination Of Rotor Downwash Slipstream Size, 2016 University of Tennessee, Knoxville
Dji S-1000 Spreading Wings Octocopter: Determination Of Rotor Downwash Slipstream Size, Jonathan Lemieux
The DJI S-1000 Spreading Wings octocopter rotor downwash slipstream area of influence was measured in axial climb conditions and in straight level flight. These data were gathered using a simple apparatus of distributed anemometers and a custom made boom affixed to the drone. Straight level flight tests incurred autopilot oscillations that rendered the data gathering and analysis challenging. The best quality data was acquired during the axial climb flight tests. The axial climbs were conducted in calm winds. It was determined that the axial climbs under these conditions displaced the rotor slipstream 9 ± 2.5 cm to the rear of ...
Assessment Of Asymmetric Flight On Solar Uas, 2016 California Polytechnic State University, San Luis Obispo
Assessment Of Asymmetric Flight On Solar Uas, Eric Belfield
Master's Theses and Project Reports
An investigation was conducted into the feasibility of using an unconventional flight technique, asymmetric flight, to improve overall efficiency of solar aircraft. In this study, asymmetric flight is defined as steady level flight in a non-wings-level state in- tended to improve solar incidence angle. By manipulating aircraft orientation through roll angle, solar energy collection is improved but aerodynamic efficiency is worsened due to the introduction of additional trim drag. A point performance model was devel- oped to investigate the trade-off between improvement in solar energy collection and additional drag associated with asymmetric flight. A mission model with a focus on ...
2015-2016 Eraudb Aiaa Design/Build/Fly Technical Report, 2016 Embry-Riddle Aeronautical University
2015-2016 Eraudb Aiaa Design/Build/Fly Technical Report, Trevor W. Perrott
The economic potential of small unmanned aerial vehicles (SUAVs) has been well documented and reported. According to the Association for Unmanned Vehicle Systems International (AUVSI), there is an associated economic impact from the growth of the UAV industry. The goal of the American Institute of Aeronautics and Astronautics Design/Build/Fly Competition Research Program (AIAA DBF CRP) is to investigate design and manufacturing methods for application to SUAVs within the scope of the AIAA DBF Competition.
Students were engaged in the application of aerospace engineering knowledge for the production of a dual-aircraft system. Through the use of Computational Fluid Dynamics ...
Development Of A "Multi-Cut" Payload For Use In Stratospheric Ballooning Missions, 2016 U of MN - Twin Cities / MN Space Grant
Development Of A "Multi-Cut" Payload For Use In Stratospheric Ballooning Missions, James Flaten, Joey Habeck, Noah Biniek, Steven Smeaton, Austin Langford, Jordan Diers, Isaac Krieger
2016 Academic High Altitude Conference
The ability to cut strings (AKA lines) during stratospheric ballooning missions has a wide variety of uses including, but not limited to, (a) flight termination (i.e. cutting payloads away from the main balloon), (b) cutting away excess lift balloon(s) to slow ascent rate (and possibly achieve float), (c) cutting away ballast weights to slow descent rate or increase ascent rate, (d) cutting away burst balloon(s) on descent to avoid parachute entanglement, and (e) cutting away payloads which are intended to return to the ground independently, for experimental purposes. We report on the development of a “multi-cut” payload ...
Risk-Based Approach To Assessment Of Advanced Technologies For Conceptual Design, 2016 California Polytechnic State University - San Luis Obispo
Risk-Based Approach To Assessment Of Advanced Technologies For Conceptual Design, Adipratnia Asmady
Master's Theses and Project Reports
The conceptual design phase of an aerospace system development program is typically characterized by short duration and relatively limited resources, yet design decisions are made that have critical implications on program risk. To address the more aggressive requirements, one of these decisions is the selection of advanced technologies. System developers need to assess advanced technologies early on, but are faced with uncertainties surrounding the potential net benefits. The concept introduced in this study is uncertainty characterization as a way to better understand the associated risk. A framework was developed to guide the interaction between the technology developer and the system ...
Tilt-Rotor Drone, 2016 California Polytechnic State University, San Luis Obispo
Tilt-Rotor Drone, Benjamin Stone, Zachary Crandall
A drone is defined a "an unmanned aircraft that can fly autonomously." In the year 2016, there exist many applications for small scale drones. Drones, having had primarily military applications, now have use in hobby robotics, photography, and even in surveying. But drones have not yet been perfected and still have room for much improvement. Several problems with drones come in the form of battery life, stability, and size. Large drones can fit many sensors and probes, but are heavy and have less flight time. For autonomous drones, stability can be an issue even though there exist many stable ...
Uav As A Service: Providing On-Demand Access And On-The-Fly Retasking Of Multi-Tenant Uavs Using Cloud Services, 2016 Embry-Riddle Aeronautical University
Uav As A Service: Providing On-Demand Access And On-The-Fly Retasking Of Multi-Tenant Uavs Using Cloud Services, Justin Yapp
Dissertations and Theses
As commercial roles for Unmanned Aerial Vehicles (UAVs) become more well-defined and demand for the services provided by them increases, UAVs rely more on new cloud computing services and co-operative coordination to provide mission planning, control, tracking and data processing. We present UAV as a Service (UAVaaS) framework, which brings features commonly found in traditional cloud services, such as Infrastructure, Platform, and Software as a Service, to the domain of UAVs. Our work aims to conceptualize and design UAVaaS for commercial applications. Specifically, a cloud-provided orchestration framework that allows multi-tenant UAVs to easily serve multiple heterogenous clients at once and ...
2d Aeroacoustic Analysis Of Flow In The Flame Trench, 2016 Embry-Riddle Aeronautical University
2d Aeroacoustic Analysis Of Flow In The Flame Trench, Meghan Pokorski
Dissertations and Theses
We present here a methodology for using the commercial software ANSYSFLUENT to predict the acoustic field associated with Space-Launch System (SLS). We consider a two-dimensional model of flame deflector, and flame trench. The ANSYS code is then used to simulate the internal flow. Both the steady state case is considered along with other cases where the inflow has a harmonic component. A Ffowcs-Williams Hawking (FWH) surface is then constructed within the computational domain to use the computed flow fluctuations to obtain the acoustic field. The acoustic data was then compared to the experimental data.
When using the ANSYS code for ...
Improved Modeling Of Atmospheric Entry For Meteors With Nose Radii Between 5cm And 10m, 2016 University of Tennessee - Knoxville
Improved Modeling Of Atmospheric Entry For Meteors With Nose Radii Between 5cm And 10m, Jakob Dale Brisby
Atmospheric entry studies typically look closely at the peak heating rate that a body encounters during its trajectory. This is an extremely important phenomenon to study because it allows engineers to determine if a trajectory is possible with given materials and craft design specifications. It also allows designers to choose what type of method will be used for mitigating the enormous heat fluxes during entry. In general, it is accepted that during the super-sonic flight regime the body will continue to be heated and an ablative heat shield often is used to deal with these heating processes. The theory outlined ...
High Power Rocket Design Report, 2016 Loyola Marymount University
High Power Rocket Design Report, Laura E. Calcara, Monica Fernandez, Chris Green, Trent Hosokawa
Highpower rockets are extremely sensitive systems that require precise planning, testing, and analysis in order to yield accurate results. Under the guidance of project advisor, Dan Larson, a highpower rocket was designed and built to reach an apogee of 3000 feet. Additionally, means of dual deployment was used in order to aid in the safe descent and recovery of the rocket. In order to meet this expectation, two parachutes were used in conjunction with black powder ejection charges. Compliance with the safety standards of NAR and NFPA was met for the ejection system used in dual deployment. To ensure that ...
The Design Of A Racing Simulator: A Three-Phase User Testing Approach, 2016 Embry-Riddle Aeronautical University
The Design Of A Racing Simulator: A Three-Phase User Testing Approach, Jakob E. Rouleau, Eric J. Wach
Human Factors and Applied Psychology Student Conference
No abstract provided.
Early Afternoon Concurrent Panel Sessions: Commercial Space Industry Snapshot: Presentation: Small Catapult-Assisted Horizontal-Launch Reusable Rbcc Ssto Spaceplane For Economical Short-Duration Leo Access, 2016 AAR Aerospace Consulting, LLC
Early Afternoon Concurrent Panel Sessions: Commercial Space Industry Snapshot: Presentation: Small Catapult-Assisted Horizontal-Launch Reusable Rbcc Ssto Spaceplane For Economical Short-Duration Leo Access, Nihad E. Daidzic,
Aviation / Aeronautics / Aerospace International Research Conference
This article discusses the conceptual design, flight trajectory calculations, and utilization of the possible future horizontally-launched reusable Single-Stage-to-Orbit (SSTO) spaceplane for small payload short-duration manned/unmanned access to Low-Earth-Orbit (LEO). The 10,000 lb spaceplane would use 5,000 ft catapult-assist horizontal-launch facility and conduct powered approach and landing on conventional horizontal paved runways following the gliding atmospheric re-entry. To increase the economy of operation, the launch facility located at high elevations (4,000+ ft) equatorial region is required, such as, the plateaus in Kenya and Tanzania in Africa and/or Ecuador in South America. A 500-lb payload, including pilot-commander ...
Small Satellite Noncommutative Rotation Sequence Attitude Control Using Piezoelectric Actuators, 2016 University of Kentucky
Small Satellite Noncommutative Rotation Sequence Attitude Control Using Piezoelectric Actuators, Joshua L. Evans
Theses and Dissertations--Electrical and Computer Engineering
Attitude control remains one of the top engineering challenges faced by small satellite mission planning and design. Conventional methods for attitude control include propulsion, reaction wheels, magnetic torque coils, and passive stabilization mechanisms, such as permanent magnets that align with planetary magnetic fields. Drawbacks of these conventional attitude control methods for small satellites include size, power consumption, dependence on external magnetic fields, and lack of full control authority. This research investigates an alternative, novel approach to attitude-control method for small satellites, utilizing the noncommutative property of rigid body rotation sequences. Piezoelectric bimorph actuators are used to induce sinusoidal small-amplitude satellite ...
Use Of A Small Unmanned Aerial System For The Sr-530 Mudslide Incident Near Oso, Washington, 2016 Texas A&M University
Use Of A Small Unmanned Aerial System For The Sr-530 Mudslide Incident Near Oso, Washington, Robin Murphy, Brittany Duncan, Tyler Collins, Justin Kendrick, Patrick Lohman, Tamara Palmer, Frank Sanborn
CSE Journal Articles
The Center for Robot-Assisted Search and Rescue deployed three commercially available small unmanned aerial systems (SUASs)—an AirRobot AR100B quadrotor, an Insitu Scan Eagle, and a PrecisionHawk Lancaster—to the 2014 SR-530 Washington State mudslides. The purpose of the flights was to allow geologists and hydrologists to assess the eminent risk of loss of life to responders from further slides and flooding, as well as to gain a more comprehensive understanding of the event. The AirRobot AR100B in conjunction with PrecisionHawk postprocessing software created two-dimensional (2D) and 3D reconstructions of the inaccessible “moonscape” region of the slide and provided engineers ...
Drone Journalism Lab Operations Manual, 2016 University of Nebraska-Lincoln
Drone Journalism Lab Operations Manual, Matt Waite, Ben Kreimer
Faculty Publications, College of Journalism & Mass Communications
This text is a guide for safely conducting drone journalism field work. It takes into account America's current drone regulations, our understanding of the public's acceptance of drones, the state of drone technologies, and our own experiences. The number one goal of any drone journalism operation is safety. At no time should safety be compromised. If there is any doubt, return the drone, also known as an unmanned aerial system (UAS), to the landing zone and terminate the flight. Ethical journalism is responsible journalism, and flying a drone means taking responsibility for the safety of those near you ...
Comparisons Of Ablator Experimental Performance To Response Modeling And Effects Of Water Phase Transition In Porous Tps Materials, David L. Smith
Theses and Dissertations--Mechanical Engineering
The Mars Science Laboratory Entry Descent and Landing Instrumentation (MEDLI) project performed extensive arc jet tests for development, qualification, and calibration of instrumented heat shield plugs. These plugs each contained several thermocouples for recording near-surface and in-depth temperature response of the Phenolic Impregnated Carbon Ablator (PICA) heat shield. The arc jet test results are entered into a comprehensive database so that broad trends across the test series can be compared. One method of analysis is to compare with ablator material response calculations and solve the in-depth heat conduction equations. Using the near-surface thermocouple measurements as a boundary condition in numerical ...
Additive Manufacturing Qualification And Certification For Aerospace And Defense And Space And Missile -- Challenges And Opportunities, Surendra Singh, Robert Hogan, Peter Kantzos
Review of Progress in Quantitative Nondestructive Evaluation
Interests in Additive Manufacturing (AM) driven by reduced lead time and costs have motivated industry, academia, and government agencies alike to define roadmaps for defining, developing and documenting qualification and certification processes for AM manufacturing. Substantial developments have been made in many aspect of AM and OEMs are flying non-critical AM parts; though, there are areas such as quality and inspections, both for in-processes and post processes and the qualification and certification that offer significant challenges and opportunities. This becomes even more obvious when dealing with numerous different factors including design intent and materials for different applications. For example, commercial ...
Operational Ndt Simulator, Towards Human Factors Integration In Simulated Pod, 2016 Airbus Group Innovations
Operational Ndt Simulator, Towards Human Factors Integration In Simulated Pod, Damien Rodat, Frank Guibert, Nicolas Dominguez, Pierre Calmon
Review of Progress in Quantitative Nondestructive Evaluation
In the aeronautic industry, the performance demonstration of Non-Destructive Testing (NDT) procedures relies on Probability of Detection (POD) analysis. This statistical approach measures the ability of the procedure to detect a flaw with regards to one of its characteristic dimensions. The inspection chain is evaluated as a whole, including equipment configuration, probe efficiency but also operator manipulations. Traditionally, a POD study requires an expensive campaign during which several operators apply the procedure on a large set of representative samples. Recently, new perspectives for the POD estimation have been introduced using NDT simulation to generate data. However, the best approach to ...
Drones In Logistics: A Feasible Future Or A Waste Of Effort., 2015 Bowling Green State University
Drones In Logistics: A Feasible Future Or A Waste Of Effort., Andrew Lotz
On December 1st, 2013 news around the world was filled with headlines about E- Commerce website Amazon.com. CEO of Amazon Jeff Bezos announced to the world that Amazon was designing a drone delivery program called Amazon Air that could deliver packages to customers in just 30 minutes. Consumers were all too excited for the program to launch while many business and air traffic savvy people were highly skeptical. Now two years later research to look back at the feasibility of drone flight and whether investment into the technology is worth it for small deliveries straight to customers is ...